MdeMdeModulePkg/UsbBusDxe: Break device enumeration process if the device descriptor...

Signed-off-by: Feng Tian <feng.tian@intel.com>
Reviewed-by: Mike Wu <mike.wu@intel.com>
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@14338 6f19259b-4bc3-4df7-8a09-765794883524

diff --git a/MdeModulePkg/Bus/Usb/UsbBusDxe/UsbDesc.c b/MdeModulePkg/Bus/Usb/UsbBusDxe/UsbDesc.c
index 35cdaf55277ce4abfe505b9135697d654a483c1c..1713e3c421a3dedf81721890ec0356edc0e4c2bd 100644 (file)
--- a/MdeModulePkg/Bus/Usb/UsbBusDxe/UsbDesc.c
+++ b/MdeModulePkg/Bus/Usb/UsbBusDxe/UsbDesc.c
@@ -786,10 +786,13 @@ UsbBuildDescTable (
     return Status;\r
   }\r
 \r
-  DevDesc          = UsbDev->DevDesc;\r
-  NumConfig        = DevDesc->Desc.NumConfigurations;\r
-  DevDesc->Configs = AllocateZeroPool (NumConfig * sizeof (USB_CONFIG_DESC *));\r
+  DevDesc   = UsbDev->DevDesc;\r
+  NumConfig = DevDesc->Desc.NumConfigurations;\r
+  if (NumConfig == 0) {\r
+    return EFI_DEVICE_ERROR;\r
+  }\r
 \r
+  DevDesc->Configs = AllocateZeroPool (NumConfig * sizeof (USB_CONFIG_DESC *));\r
   if (DevDesc->Configs == NULL) {\r
     return EFI_OUT_OF_RESOURCES;\r
   }\r